An exchange traded fund pegged to the Japanese yen’s movements relative to the U.S. dollar was set to rise on Wednesday as it recovers the loss it suffered after Japan’s central bank intervened in currency markets.

The yen was strengthening against the dollar Wednesday morning.

The Japanese yen intervention was too limited, according to Moody’s. The effects of the central bank forcing down the yen “were partially reversed the next day, a credit negative for Japan’s fragile recovery,” Moody’s senior vice president Tom Byrne said in a report. [Japanese Yen ETF Creeping Higher After Intervention.]

CurrencyShares Japanese Yen Trust (NYSEArca: FXY) gained about 1% on Tuesday after the Federal Reserve pledged to keep interest rates low until at least mid-2013.